Finishing tool



Jan. 7, 1941. A s KEMP 2,227,588

FINISHING TOOL Filed April 18, 1939 Patented Jan. 7, 1941 UNITED; STATESPATENT OFFICE 2,227,588 mnsnnvo rooc New Jersey Application April 18,1939', Serial No. 263,624 In Great Britain May 3, 1938 4 Claims. (CI.15-43) This invention relates to tools for performing finishingoperations and is herein illustrated and described as embodied in arotary tool adapted to polish wax surfaces on the bottoms and heels 5 ofshoes. Machines forflnishing shoe bottoms are sometimes provided with acircular pad ar-. ranged upon the lower end of a driven spindle andheated so as to enable the pad to distribute wax upon the sole and heelbreast portions of It is an object of the presentinvention to provide animproved tool of this character. In accordance with a feature of theinvention the pad, together with a polishing cover, is clamped centrallyto a rigid disk carried upon the end of a rotary spindle, the marginalportions or the pad and cover surrounding the periphery of the rigiddisk and being secured in position relatively to the spindle. Thecomposite pad herein shown includes a pad section of sponge rubber whichis normally flat but which upon being centrally clamped to the tool bodyassumes a dished shape suitable for the performance of its operation.Such deformation of the pad serves also to impart a desirable tension tothe finished cover.

These and other features of the invention comprising certainarrangements and combination of parts will be described in the following3i) pecification and pointed out in the claims.

The drawing shows a side view partly in section of the improved tool,together withthe outline of part of a shoe being operated upon.

The tool comprises a tapered spindle I0 35 adapted to fit into aninternally tapered end of a driven shaft. Near its lower end the spindleit has an enlargement 12 which terminates in a shoulder l3. Between theshoulder l3 and the adjacent end of the spindle is a cylindrical 40portion it upon which is slidingly mounted a hub ll of metal or othersuitable rigid material. The hub ll has a'flange in the form of a diskll coaxial with the spindle ll. Over the outer face of the disk I I isfitted a circular pad section 45 24 or molded vulcanized rubber havingan mwardly projecting flange 26 on its upper side which can beelastically extended to allow the pad section 24 to be applied to thedisk It. The pad section 24 thus covers the outer face of the 50 disk Itand also surrounds the periphery of the disk. Adhesively attached to thepad section 24 is a circular pad section 28 of sponge rubber whichcovers the outer face of the pad section 24 and also surrounds theperiphery of the pad 55 section 24, the two pad sections together mak-'ing up a composite pad. The pad section 28 may be reinforced around itsperiphery by a band of thin woven canvas 25 cemented thereto. The outerface of the pad section It is fitted with a replaceable polishing coverit which in 5 the illustrated tool is composed of knitted cotton cloth.This cover extends around the periphery of the pad II.

For securing the central portions of the cover III and the compositerubber pad to the spindle g and also for securing the disk [,8 to thespindle there is provided a clamping member in the form of a dishedwasher extending over the central portion of the working face of the padsection It and partly over the cover 30. Clamping 15 pressure is exertedthrough this washer by means of a screw it threaded axially into the endof the spindle ill. Slidably mounted on the hub H is a disk orfrusto-conical plate 22 the marginal v portion of which is engaged bythe marginal 2o portion of the cover 30 which extends over the flange 25of the inner rubber pad section 24. It

is evident that tightening of the screw [6 will thus not only secure thecentral portions of the pad sections to the spindle but will also cause25 the margin of the disk it to exert a clamping pressure through theflange 26 and through the margin of the cover it against the margin ofthe disk 22, which clamping pressure is sust'ained bythe shoulder ii ofthe spindle. The 30 sponge rubber pad section 28 is normally flat. Thecompression of the central portion, however, serves to impart to it thedished form shown in the drawing, rendering it particularly suitable foroperations upon shoes and insuring that the washer 32 and the head ofthe screw Ii will not come into contact with the work. Such deformationof the pad tends likewise to draw the margin of the knitted cover 30downwardly, thereby imparting a desirable tension 40 to the cover. v

The drawing shows the tool in operation upon a shoe 3! fitted with 2.Louis heel 36. The shoe is shown applied to the right-hand side of thetool as is usual and is in position for the breast face of the heel tobe treated by the upper marginal part of the cover 30 supported by thecorresponding upper marginal part of the pad section 28. The lowerbreast portion 38 of the heel that merges into the shank portion of theshoe and that part 40 of the sole itself will be treated by the lowermarginal part of the tool indicated by the reference character 42.

Although the illustrated tool is herein disclosed as provided with aknitted cover suitable for wax polishing, it is to be understood thatthe inven--, tion is also applicable to other types of finishing coversor covers which may have abrasive properties. Having described theinvention, what I claim as new and'desire to secure by Letters Patent 01the United States is:

1. A finishing tool comprising a rotary spindle, a disk ofrlgid materialcarried by and coaxial with said spindle, a circular pad of yieldablematerial having an inner face against one face of said disk, a cover forthe outer face of said pad composed of sheet material suitable forperforming a finishing operation, said cover surrounding the peripheryof said pad, means for securing the marginal portion of said cover inposition relatively to the spindle, and clamping means for securing thecentral portions of the cover and the pad in position relatively to thespindle, and for compressing the central portion of the pad and fortensioning the cover.

2. A finishing tool comprising a rotary spindle, a disk of rigidmaterial carried by and coaxial with said spindle, said disk having anouter face and an opposite inner face, a circular rubber pad having aninner face against the outer face of said disk and having an oppositeouter face, said pad extending beyond the periphery of said disk, acover for said outer face of said pad composed of'sheet materialsuitable for performing a finishing operation, said cover surroundingthe periphery of said pad, a screw clamp threaded axially into an end ofsaid spindle for exerting pressure through the central portion of saidcover and thence through the central portion of said pad to secure thecentral portions of the cover and the pad in position relatively to thedisk, and a. circular clamping plate on said spindle engageable with themarginal portion of said cover to sustain clamping pressure exertedthrough the pad and thence through the cover by the inner face of saiddisk to secure the marginal portions of the cover and the pad inposition relatively to said disk.

3. A finishing tool comprising a rotary spindle having a shoulderadjacent to one end thereof,

a rigid disk having a hub surrounding said spindle between said end andsaid shoulder, said disk having an inner face directed toward saidshoulder and an outer face directed away from said shoulder, a circularpad of rubber comprising an inner section of relatively solid texturecovering the outer face of and surrounding the periphery of said diskand an outer section of sponge rubber covering the outer face of andsurrounding the periphery of said inner section. a cover for the outerface oi said sponge rubber section composed of sheet material suitablefor performing a finishing operation, said cover surrounding theperiphery of said sponge rubber section, a screw clamp threaded axiallyinto the end of said spindle for exerting pressure through the centralportion of said cover and thence through the central portion of said padand thence through said hub against said shoulder to clamp the centralportion of the cover, the central portions of said pad, and the hub inposition relatively to the spindle, and a circular clamping platesurrounding said hub and bearing against said shoulder and having itsmarginal portion arranged to sustain a clamping pressure exerted by thedisk through the marginal portions of the solid rubber section and ofthe cover when the screw clamp is tightened, thereby securing themarginal portions of the cover and the solid rubber section in positionrelatively to the spindle.

4. A finishing tool comprising a rotary spindle, a circular pad ofnormally flat sponge rubber, a cover for one face of and for theperipheral portion of said pad composed of sheet material suitable forperforming a finishing operation, a clamp for compressing the centralportion of said pad and for securing the central portions of the pad andof the cover coaxially in position relatively 'to said spindle, andmeans for securing the marginal portion of said cover relatively to saidspindle, the central compression of said pad operating to impart adished form to the pad and to tension the cover.

ALFRED STEPHENSON KEMP.

